Unzip file and rename it to phpMyAdmin and move it to your web server folder /Library/Server/Web/Data/Sites/Default/Rename config.sample.inc.php to config.inc.php in the phpMyAdmin folder and create in a randomly generated phrase of at least 32 characters. A good place to generate it at https://strongpasswordgenerator.com/

$cfg['blowfish_secret'] = 'w908rh180nyUB0Lw0X6E0316z52834cz'; /* YOU MUST FILL IN THIS FOR COOKIE AUTH! */

You can bring it up to confirm through your browser: http://localhost/phpMyAdmin/

HOMEBREW

Install homebrew via terminal as a user, follow the instructions until it will say "Your system is ready to brew."